Endress+Hauser Nivotester FTL325P - Page 34

Commissioning Nivotester FTL325P, 3-channel
34 Endress+Hauser
8.2.17 CH2 + CH3 CH1(Δs), MIN safety mode without fault signaling
CH1
ye
ye
yeye ye
CH1
CH3
CH1
CH2
4 4 4 4 4 4 4
5 5 5 5 5 5 5
6 6 6 6 6 6 6
CH1
CH3CH2
CH2
CH3
D
s
gn
gngngngn
gn
1 1 1 1 1
1 1
ye ye
rd
ye ye
1 2
0 V
15
15 15 15 15
22 23 24 22 23 24
22 23 24 22 23 24
22 23 2422 23 24
22 23 24
26 27 28 26 27 28
26 27 28 26 27 28
26 27 2826 27 28
26 27 28
16
16 16 16 16
15
15
16
16
2
2
2
2
2
2
2
3
3
3
3
3
3
3
rd
MODE 1
1 2
ON
MIN
MIN
MIN
1 2
ON
A0039223
 32 Switching behavior and signaling
Δs, e. g. Pump control at one tank and additional minimum detection (LL level)
• 1 sensor for minimum detection (LL level) connected at input signal 1 (terminals 7 and
8)
• 1 sensor (H-level pump control) connected at input channel 2 (terminals 33 and 34)
• 1 sensor (L-level pump control) connected at input channel 3 (terminals 37 and 38) .
Relay outputs of output channels 2 and 3 switch simultaneously→  32,  34 . This
ensures, for example, that a pump can be switched on at L level and switched off at H
level. Relay output 1 does not switch until the LL level at input channel 1 has been
reached.
Fault signaling for input channel 1 is switched off.
Fault signaling for input channels 2 and 3 is switched on.
When using the Liquiphant FTL51B sensor with electronic insert FEL67, sensor (H level)
FEL67 must be set to MAX safety and sensor (L level) FEL67 must be set to MIN safety.